baber/WOPTO huggingface dataset:
Patent GB-1167673-A (GB)
Title: Continuous Solvent Extraction and Dehydration System for Fat and Water Containing Tissues
IPC: C11B1/10
Filed: 1968-06-13
Abstract: 1,167,673. Extracting fats. BLAW-KNOX CO. 13 June, 1968 [10 Jan., 1968], No. 28273/68. Heading C5C. A continuous process for the solvent extraction and dehydration of fat-and-water-containing solids comprises comminuting the solids and contacting them with vapour of a solvent for fat immiscible with water, the heat derived from condensation of the solvent vapour being the sole source of applied heat in the contacting, said solvent vapour being supplied in amount sufficient to remove water from the solids as the heterogeneous azeotrope of water and solvent and to substantially dehydrate the solids, the condensation of solvent vapour providing liquid solvent flowing concurrently with the solids. Preferably the solids are comminuted in the presence of liquid solvent and the vapour and comminuted solids flow countercurrently during the contacting step. A mixture of dehydrated comminuted solids and fat-solvent miscella are removed at the end of the contacting step, the miscella is separated from the solids, solvent is evaporated from the miscella and returned as vapour to the contacting step. Examples describe the extraction of fish offal using octane and of meat scrap using trichloroethylene.
Patent GB-1533729-A (GB)
Title: Coating composition
IPC: C09D5/32
Filed: 1976-07-08
Abstract: 1533729 Lacquers PENTACON DRESDEN KAMERA-UND KINOWERKE VEB 8 July 1976 [8 July 1975] 28449/76 Headings C3K C3R and C3F  A reflection-free coating material comprises a black lacquer mixed with activated carbon. The lacquer may be based on nitrocellulose or amine alkyd resin.
Patent GB-838618-A (GB)
Title: Table and like lamps
Inventor: THOMPSON LAURA
IPC: F21V9/40
Filed: 1957-09-10
Abstract: 838,618. Ornamental table lamps. ORME, 'T., and CATLEY, L. H. F. Sept. 10, 1958 [Sept. 10, 1957; Jan. 27, 1958], Nos. 28450/57 and 2593/58. Class 75(2) A table or like lamp comprises a holder 2 for an electric lamp, an upright doublewalled screen 3 which is curved in horizontal section, the outer wall 8 having a pictorial design depicting a flowing medium, e.g. a waterfall and the inner wall 7 being opaque with transparent areas or apertures behind the areas of the outer screen corresponding to the flowing medium, an inner tubular screen 12 surrounding the lamp and bearing a series of obliquely disposed semi-opaque and transparent bands 19, 20 and means for causing the inner screen to rotate automatically by hot air rising from the lamp. The inner screen 12 is mounted on a pivot 16 carried by a wire 17 secured to the base 1 supporting the lamp holder 2, the upper end of the screen being closed by a disc 13, e.g. of aluminium, having a series of inclined vanes 14 struck out from its surface. The semi-opaque bands 19 on the screen 12 may be formed by printing, painting or grinding and the whole of the upper part 21 of the screen may be similarly treated.
Patent GB-673055-A (GB)
Title: Improved dispenser for self-adhesive tape
Inventor: DONKIN WILLIAM HARRY
IPC: B65H35/00
Filed: 1950-11-21
Abstract: 673,055. Roll holders. OFREX, Ltd. Nov. 21, 1950, No. 28466/50. Class 18. [Also in Group XV]. A holder for a roll of adhesive tape comprises a base 1 having a roll support 5 provided with a. spring finger 8 formed by slitting the support 5, the finger having a lip 9 to retain the roll on the support which is positioned by initially deflecting the finger to permit the roll to slide over the support. A cutter 4 formed at the end of a nose portion 3 is supported by a wall 2 extending from the base 1. Discs may be provided to position the roll on the support 5.
Patent GB-650935-A (GB)
Title: Improvement in electron discharge device
IPC: H01J25/56
Filed: 1946-09-23
Abstract: 650,935. Magnetrons. SYLVANIA ELECTRIC PRODUCTS, Inc. Sept. 23, 1946, No. 28467. Convention date, Sept. 29, 1945. [Class 39 (i)] [Also in Group XL (b)] A magnetron comprises two interdigitated anode members 10, 11, Fig. 1, surrounding a cathode 6, a cavity resonator connected across the anode members, preferably via discs 4, 5 sealed through the envelope, and the device is of fixed or adjustable asymmetric construction to enable the establishment of a mode of oscillation within the cavity in which a stationary electric field varies through one or more maxima and minima in accordance with the angular position at a constant radius around the axis of the anode, the asymmetry being other than that due to an output coupling loop. To provide the asymmetry, (a) the cathode may be positioned eccentrically within the anode, Fig. 9 (not shown); (b) one anode finger may be longer or thinner than the others, Figs. 10, 11 (not shown), or two diametrically opposite fingers are larger than the others; or (c) the asymmetry may be in the external cavity resonator, e.g. by removing one or both tuning screws 43, Fig. 13, on the cavity diameter perpendicular to the radius passing through the output coupling loop. The cathode 6 is indirectly heated having a heater 7 supported between ceramic members 8, 9, and the cathode leads 14, 15 may be of a chromium-nickeliron alloy suitable for sealing to glass. Flanges 24, 25 confine the discharge. The anode members 10, 11 are connected to discs 4, 5 via flanges 10a on the former and flanges 12 and fingers 13 on the latter, the parts being soldered together. The magnetic field is produced by a permanent or electro-magnet 37. Five, seven, or nine tuning screws 43, Fig. 13, may be used and may have blocks at their inner ends to contact the upper and lower ends of the resonator conductively or insulatingly. The mode of oscillation is discussed in detail and is distinguished from the known # mode and other radial modes. In the discussion of the known # mode it is stated that the device may operate at a harmonic of its resonant freequency in which case the glass envelope parts are at voltage nodes. Specifications 449,920, 465,650 and 550,081 are referred to.
Patent GB-1458239-A (GB)
Title: Decontamination agent for metallic surfaces and method of deconta mination by employing same
IPC: G21F9/00
Filed: 1974-06-27
Abstract: 1458239 Decontamination of radio-active surfaces KERNFORSCHUNG mbH Ges F³r 27 June 1974 [2 July 1973] 28485/74 Heading G6R An agent for cleaning radio-actively contaminated metal surfaces comprises a vaporous mixture of nitric acid, water vapour, and a perfluorinated aliphatic acid or a salt thereof; the nitric acid concentration is below that of the azeotropic mixture with water vapour, and the content of perfluorinated compound is such as to reduce the surface tension of the condensed mixture to about 25 dyne/cm. at 20‹ C. In examples the perfluorinated compound is ammonium perfluorocaprylate. Contaminated articles may be placed in a container and treated with the vaporous mixture produced by boiling a nitric acid solution containing the perfluorinated compound, the solution being either in the container or in a communicating vessel. A similar method may be used to decontaminate the inside surfaces of vessels or plant. Residues may be removed from the surfaces with steam or a jet of water.
Patent GB-616944-A (GB)
Title: Improvements in four-stroke internal combustion engines
IPC: F02B59/00
Filed: 1946-09-24
Abstract: 616,944. Four-stroke engines. SERY, C., and TOURNAIRE, M. Sept. 24, 1946, No. 28561. [Class 7 (ii)] A closed sleeve 2 reciprocates over a reciprocating piston 3, the impulse in the combustion chamber acting on both, and the sleeve and piston are connected to crank-shafts geared together at 2 to 1 ratio so as to produce a prolonged exhaust stroke. An aperture 7 provides communication with the valve chamber.
Patent GB-799606-A (GB)
Title: Improvement in the treatment of textile materials to render them fire-resistant
IPC: D06M15/433
Filed: 1955-10-07
Abstract: Fibrous textile materials are rendered fire-resistant and crease-resistant or dimensionally stable by impregnation with an insoluble synthetic resin formed from formaldehyde and an ester of phosphorodiamidic acid.  These esters have the general formula RO.PO(NH2)2, where R represents an alkyl or aryl radical which may contain substituents such as chlorine; in examples, R is phenyl or ethyl.  These esters may be prepared by reacting phosphoryl chloride with an alcohol or phenol and then treating the reaction product with ammonia; they may then be condensed with formaldehyde in alkaline solution to form water-soluble intermediate condensation products which are esters of N,N1-bis - hydroxy - methyl - phosphorodiamidic acid. The fibrous textile material is impregnated with an aqueous solution containing this intermediate condensation product together with an acidic or acid-yielding catalyst for the further condensation (citric acid or ammonium dihydrogen phosphate in examples), dried and heated to complete the condensation and form the insoluble resin. The material may also be simultaneously impregnated with an insoluble synthetic resin formed from formaldehyde and urea, thiourea, melamine or substitution products thereof; the water-soluble intermediate condensation product of these substances is applied in admixture with the intermediate condensation product of the phosphorodiamidic ester. The textile material may be of cotton or viscose rayon.ALSO:Fibrous textile materials are rendered fireresistant and may also be rendered creaseresistant or dimensionally stable by impregnation with an insoluble synthetic resin formed from formaldehyde and an ester of phosphorodiamidic acid.  These esters have the general formula RO.PO(NH2)2, where R represents an alkyl or aryl radical which may contain substituents such as a halogen atom or atoms, e.g. chlorine; in examples, R is phenyl and ethyl.  These esters may be prepared by reacting phosphoryl chloride with an alcohol or phenol and then treating the reaction product with ammonia; they may then be condensed with formaldehyde in alkaline solution to form water-soluble intermediate condensation products which are esters of NN1-bis-hydroxymethyl-phosphorodiamidic acid.  The fibrous textile material is impregnated with an aqueous solution containing this intermediate condensation product together with an acidic or acidyielding catalyst for the further condensation (citric acid or ammonium dihydrogen phosphate in examples), dried and heated to complete the condensation and form the insoluble resin.  The material may also be simultaneously impregnated with an insoluble synthetic resin formed from formaldehyde and urea, thiourea, melamine or substitution products thereof; the water-soluble intermediate condensation product of these substances is applied in admixture with the intermediate condensation product of the phosphorodiamidic ester. The textile material may be cellulosic (e.g. cotton or viscose rayon).
Patent GB-207344-A (GB)
Title: Improvements in or relating to geysers
IPC: F24H1/12
Filed: 1922-10-20
Abstract: 207,344. Sugg, P. H., and Sugg & Co., Ltd., W. Oct. 20, 1922. Internally-fired boilers provided with an inner water vessel and an outer water jacket have a coned seating 4 at the top of the inner wall 2 of the outer jacket upon which rests the coned upper part 9 of the outer wall 6 of the inner vessel. All soldered joints are cooled by contact with water when in use. Water from the supply 15 passes by a pipe traversing the coned seatings to the jacket and thence by a similar pipe on the opposite side to an annular trough 20 round the flue outlet 18 and to the inner vessel from which it flows by a pipe 21 to the spout 22. The inner vessel is traversed by a flue 17 communicating with the annular space between the jacket and the inner vessel and with a central uptake 18.
Patent GB-1440515-A (GB)
Title: Process and apparatus for winding up flat webs of material to  form a roll thereof
IPC: B65H18/28
Filed: 1973-06-15
Abstract: 1440515 Web binding HOECHST AG 15 June 1973 [19 June 1972] 28602/73 Headings B8M and B8R A web is bound into a roll whose innermost turn is in contact with at least one support 2, 2<SP>1</SP>, the width of the support or the total width of the supports varying from 1 to 30% of the width of the roll. The supports 2, 2<SP>1</SP> may be cylindrical or frusto-conical and provided with circumferential grooves. The cross-sectional area may be circular, oval or polygonal.
Patent GB-489533-A (GB)
Title: Machine for straightening metal plates
IPC: B21D1/02
Filed: 1937-10-21
Abstract: 489,533. Straightening. UNGERER, F. Oct. 21, 1937, Nos. 28696 and 28697. Convention dates, Feb. 2 and May 21. [Class 83 (iv)] In a straightening-machine with straightening rolls e and backing rolls R, a row of short rolls g is substituted for one or more of the rolls e. The rolls g are selectively moved towards the workpiece by cams h coupled one at a time to a shaft m turned by a hand wheel i<3>. The cams may be replaced by screw-andnut mechanism and the shaft m may be in sections for advancing the rolls g in pairs. In a modification, Fig. 12 (not shown), the rolls g are strung upon a shaft adjustable axially for a distance equal to half the length of a roll. The shaft may be driven and connected to the rolls by loose keys. In a further modification, the cam h may act upon short backing rolls engaging the short rolls g, Fig. 16 (not shown).
Patent GB-519796-A (GB)
Title: Improvements relating to the treatment of lumpy granular or powdered material with gases
IPC: F27B7/42
Filed: 1938-10-03
Abstract: 519,796. Treating granular materials. JORGENSEN, M. VOGEL-. Oct. 3, 1938, No. 28709. [Class 51 (ii)] [Also in Groups III and V] In a process for treating granular or lumpy material with gas to cool or preheat it or effect some chemical change such as the artificial ageing of cement with carbon dioxide, the gas is drawn transversely through a layer of material uniformly thickly applied on a plane inclined gas-permeable support and the layer subjected to regular internal disturbance parallel to the support to cause it to move as a whole down the plane without local internal sliding. Cement clinker cooling apparatus comprises a grate 7 and reciprocable rods 11 supported above it by resilient bars 23, the whole being enclosed in a casing so that air passed through the layer may be used as preheated secondary air of combustion. The grate has hooded apertures to prevent clinker falling through. It may also be stiffened and preferably is inclined at an angle just less than, the angle of repose of the clinker. Flights 21 rigidly secured to the rotary kiln 1 distribute evenly at the top of the grate clinker accumulating at a box 19 perforated also to transmit cooling air. Besides the stroke of the bars 11 being adjustable, its speed may be automatically controlled in accordance with the thickness of the layer by means of an arm resting thereon and adapted to vary to a degree dependent on its height the resistance of an electric driving motor circuit.
Patent GB-152948-A (GB)
Title: Improvements in or relating to safety valves
IPC: F16K17/08
Filed: 1920-10-11
Abstract: 152,948. Crosby Steam Gage & Valve Co., (Assignees of Clark, G. H.). Oct. 23, 1919, [Convention date]. Safety-valves. -A safety-valve of the kind having concentric seats and a centrally perforated valve member is provided with means to constrict the area of egress from the inner seat as the valve opens. The valve member B loaded by a spring G freely slides in a casing Q to co-operate with seats E, F and is provided with a ported depending stem J slidable in the valve sea.t. As the valve opens steam passes the inner seat into a " huddling " chamber N to give a pop and then passes through ports K into the chamber J' the outlet L of which is constricted as the valve rises by the pointed end 0 of a spindle adjustably mounted in the casing. The end of the spindle may be conoidal in form or partly cylindrical and part conical.
Patent GB-1144571-A (GB)
Title: A.c. amplifiers
Inventor: ADAMS DEREK STANLEY
IPC: H03F3/26
Filed: 1965-07-07
Abstract: 1,144,571. Transistor amplifying circuits. JOSEPH LUCAS (INDUSTRIES) Ltd. 6June, 1966 [7 July, 1965], No. 28746/65. Heading H3T. An amplifier comprises a pair of amplifying circuits each with a feedback path, operating in push-pull into a centre-tapped inductance, the tap of which is connected to a point of fixed potential via an inductor or resistor. A.C. source 5 is coupled by one half secondary 7 of a transformer to an amplifying circuit comprising a long-tailed pair of transistors 12, 18 coupled by emitter-circuit resistor 13. An output stage comprising series-connected transistors 23, 24 is driven from the collectors of transistors 12, 18 by means of transformer 16; this output stage feeds into one half of the centre-tapped primary of an output transformer 10 and resistor 31 provides overall negative feedback. The other half secondary of transformer 7 drives in opposite phase a similar amplifying circuit comprising transistors 12a, 18a driving output transistors 23a, 24a which feed into the other half primary of output transformer 10. According to the invention, the centre-tap of transformer 10 is returned to the centre-tap on power supply 25, 26 via an inductor 28, or alternatively via a resistor. As shown inductor 28 is shunted by resistor 34 and clipping diode 35.
Patent GB-1408111-A (GB)
Title: Dimethylamine-epichlorohydrin-ammonia polymers and process  of making same
IPC: C02F1/54
Filed: 1973-06-18
Abstract: 1408111 Polyamines NALCO CHEMICAL CO 18 June 1972 [20 Sept 1972] 28795/73 Heading C3R Polyamines are prepared from dimethylamine, ammonia and epichlorohydrin by (A) preparing an aqueous solution of dimethylamine and ammonia, wherein the ammonia is present in a concentration of 0À1 to 60% by weight based on said dimethylamine; (B) adding the epichlorohydrin over a period of 1 to 40 hours to the solution prepared in step (A) while maintaining the reaction temperature between 25‹ to 100‹C., wherein the total amount of epichlorohydrin added to the solution is 65 to 110% by weight based on said dimethylamine and ammonia; (C) adding an aqueous solution of an alkali metal hydroxide to maintain a pH of above 4 while the polymer is formed; (D) adjusting the pH to not less than 3À0 with an acid; and (E) separating and isolating the dimethylamine - epichlorohydrin - ammonia polymer product. The polymer is used for the flocculation of suspended matter in aqueous media particularly where the presence of chlorine would impair the efficiency of other coagulants. Examples are given.
Patent GB-1361512-A (GB)
Title: Egg processing systems
IPC: B41F17/30
Filed: 1972-06-20
Abstract: 1361512 Sorting by weighing FMC CORP 20 June 1972 [30 June 1971] 28813/72 Heading G1W [Also in Division B6] Eggs E held in a conveyer made up of a chain of buckets are printed on by a selected one of a plurality of printing heads, each comprising a marking wheel 16, in conformity with data entered in a memory when the eggs were graded by the individual weighing of the eggs and placed in the conveyer. Preferably the memory is a moving endless belt, bearing displaceable pins which trip switches as the belt is advanced in step with the egg-bearing conveyer. Each marking wheel carries a plurality of marking heads 32, with elastomeric bodies, which distort to accomodate the eggs, and flexible printing elements 38. A pivoting movement of arm 20 about a fixed axis brings a head into contact with an egg, then the wheel is raised and one of its printing elements inked by rollers 22 and 24.
Patent GB-1527320-A (GB)
Title: Flexible rapier for a rapier loom
IPC: D03D47/27
Filed: 1977-07-08
Abstract: 1527320 Rapier loom RUTI MACHINERY WORKS Ltd 8 July 1977 [8 July 1976] 28876/77 Heading DIE A flexible rapier for a rapier loom comprises a flexible elongate element formed of epoxy or phenol plastics reinforced with carbon fibres and a weft inserting head attached to one end of the element.
Patent GB-1386257-A (GB)
Title: Velocity sensitive safety valve mechanism
IPC: E21B34/00
Filed: 1972-06-21
Abstract: 1386257 Valves SCHLUMBERGER TECHNOLOGY CORP 21 June 1972 [21 June 1971] 29005/72 Heading F2V [Also in Division El] A velocity sensitive safety cut-off valve comprises a housing having a flow passage therein, a ball closure member 104 coupled to a valve actuator member 92 and biased towards the closed position by a spring 116 but held open by latch means 124 engaging a notch 130 in the actuator member and latch releasing means 132 which is held in an inoperative position by a spring 154 but which is responsive to a difference in pressure between the fluid upstream of a choke element 86 acting through ports 142 and the fluid downstream of the choke element such that at a predetermined pressure difference equivalent to a particular velocity of fluid the valve is closed. The valve is reopened by application of fluid from an auxiliary source acting on piston 170. A pin 114 fixed to the housing and received within an arcuate groove 112 in the ball translates longitudinal movement of the ball into rotational movement to effect opening and closing of the valve. The spring 154 bears against the releasing means 132 via a retainer ring 144 and detents 148 held in a groove 152. After an initial upward movement against the spring the detents are removed from the groove because of the wider box and the camming action of the sidewalls 160 of the groove and release the means 132 from the bias of the spring 154. The reopening of the valve is facilitated by a lost motion connection formed between the valve actuator and the latch releasing means comprising a split-ring 180 and a reduced diameter portion of the valve actuators defining spaced shoulders 186 and 188. A check valve may be positioned upstream of the choke element.
Patent GB-169390-A (GB)
Title: Improvements in boat hulls
IPC: B63B1/32
Filed: 1920-10-13
Abstract: 169,390. Langstaff, J. E. Oct. 13, 1920. Hulls.-A power-driven boat hull has a bottom from which depends a well 10 having an upwardly and forwardly extending bottom 9, upwardly diverging side walls 2, and a forwardly and outwardly curved bow 5 which may have upwardly and outwardly diverging concave side walls. The bow may extend above the main hull 2 and carry a deck 6. Plates 11 arranged adjacent to the sides of the well 10 extend forwards on opposite sides of the inclined bottom 9 and form a recess or channel for the water. The bottom of the main hull is upwardly and forwardly inclined at 7, in the same plane as the bottom 9. Propellers 12 and a rudder 19 are disposed between a plate 17 extending from the bottom of the well 10 and the main hull bottom.
Patent GB-891448-A (GB)
Title: Improvements in and relating to hand guards for rifles
IPC: F41C23/16
Filed: 1960-08-23
Abstract: 891,448. Hand guards for rifles. STAATSBEDRIJF ARTILLERIE INRICHTINGEN. Aug. 23, 1960 [Sept. 9, 1959], No. 29059/60. Class 119. A hand guard for a rifle comprises a heat insulating sleeve 14 of synthetic material, the sleeve being split longitudinally and provided with a separate metallic inner tube 7, 7<SP>1</SP> supported on the barrel 1 independently of the sleeve 14 which is secured on the inner tube, the latter also being split longitudinally in a plane displaced by 90 degrees from the dividing plane of the sleeve. The foremost end of the inner tube 7, 7<SP>1</SP> is located in a centering rim 3 on the holder 2 of the foresight and the rear end of the tube has an inwardly directed rim 8 which engages behind a collar 9 of the barrel nut 5. The foremost. end of the sleeve 14 is located in a centering rim 13 on the inner tube 7, 7<SP>1</SP> and the rear end has a collar 15 which fits behind the rim 8 of the tube. The barrel nut 5 is also provided with an outer screw thread on which is threaded a clamping nut 16 which urges the rim 8 and collar 15 against the collar 9 and the sleeve 14 into the centering rim 13 and locks the inner tube 7, 7<SP>1</SP>. To remove the sleeve 14 and tube 7, 7<SP>1</SP> the nut 16 is screwed backwards. Apertures 18 in the forward part of the tube 7, 7<SP>1</SP> and -coinciding apertures 19, 20 in the rear part of the tube and in the sleeve 14 provide for a constant circulation of air along the barrel and through the air chamber 17 to cool the barrel and hand guard.